MDCAT Physics MCQ #2814

The half-life of a radioactive substance is 10 years. What fraction remains after 30 years?

MDCAT Physics MCQ #2814

  1. Question 1

    Q1. The half-life of a radioactive substance is 10 years. What fraction remains after 30 years?

    • A) 1/2
    • B) 1/4
    • C) 1/8
    • D) 1/16

    Answer: 1/8

    Explanation: After 3 half-lives, 1/8 of the substance remains.